Sample-configuration for a local private domain with BIND8:
-----------------------------------------------------------

1 domain:     local
1 server:     test.local
5 hosts:      test1, test2, test3, test101, test102
2 networks:   172.16.50.0/24, 192.168.100.0/24

nameserver:   10.0.0.1 (may be the DNS of the provider)

Hosts:
------
test.local        172.16.50.1
                  192.168.100.1
test1.local       172.168.50.101
test2.local       172.168.50.102
test3.local       172.168.50.103
test101.local     192.168.100.101
test102.local     192.168.100.102

Files:
------
/etc/named.conf
/var/named/localhost.zone
/var/named/127.0.0.zone
/var/named/local.zone
/var/named/172.16.50.zone
/var/named/192.168.100.zone      
/var/named/root.hint

localhost.zone, 127.0.0.zone, root.hint 
normally need no modification.


